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044d712d4d03f8354962d54e47cfac2346a69ccccilix#ifndef SEEN_INKSCAPE_DISPLAY_DRAWING_ITEM_H

044d712d4d03f8354962d54e47cfac2346a69ccccilix#define SEEN_INKSCAPE_DISPLAY_DRAWING_ITEM_H

044d712d4d03f8354962d54e47cfac2346a69ccccilix

044d712d4d03f8354962d54e47cfac2346a69ccccilix#include <exception>

044d712d4d03f8354962d54e47cfac2346a69ccccilix#include <boost/intrusive/list.hpp>

044d712d4d03f8354962d54e47cfac2346a69ccccilix#include <2geom/rect.h>

044d712d4d03f8354962d54e47cfac2346a69ccccilix#include <2geom/affine.h>

63c37c52d614c3cde7913cf23a0f79040ed2e318Jabiertxof

044d712d4d03f8354962d54e47cfac2346a69ccccilixclass NRArena;

044d712d4d03f8354962d54e47cfac2346a69ccccilixclass SPStyle;

044d712d4d03f8354962d54e47cfac2346a69ccccilixvoid nr_arena_set_cache_limit(NRArena *, Geom::OptIntRect const &);

044d712d4d03f8354962d54e47cfac2346a69ccccilix

57678273bfa80d2feb4fa17ac25818f277f5c684cilixnamespace Inkscape {

57678273bfa80d2feb4fa17ac25818f277f5c684cilix

6b03b973a8d36d45d5345ba1013db10df1c7a5cecilixtypedef ::NRArena Drawing;

6b03b973a8d36d45d5345ba1013db10df1c7a5cecilixclass DrawingContext;

57678273bfa80d2feb4fa17ac25818f277f5c684cilixclass DrawingCache;

57678273bfa80d2feb4fa17ac25818f277f5c684cilixclass DrawingItem;

63c37c52d614c3cde7913cf23a0f79040ed2e318Jabiertxofnamespace Filters { class Filter; }

044d712d4d03f8354962d54e47cfac2346a69ccccilix

044d712d4d03f8354962d54e47cfac2346a69ccccilixstruct UpdateContext {

044d712d4d03f8354962d54e47cfac2346a69ccccilix Geom::Affine ctm;

044d712d4d03f8354962d54e47cfac2346a69ccccilix};

a39c187369a59e887255e3f704a3ababf2b10678Johan B. C. Engelen

044d712d4d03f8354962d54e47cfac2346a69ccccilixclass InvalidItemException : public std::exception {

044d712d4d03f8354962d54e47cfac2346a69ccccilix virtual const char *what() const throw() {

044d712d4d03f8354962d54e47cfac2346a69ccccilix return "Invalid item in drawing";

57678273bfa80d2feb4fa17ac25818f277f5c684cilix }

6b03b973a8d36d45d5345ba1013db10df1c7a5cecilix};

6b03b973a8d36d45d5345ba1013db10df1c7a5cecilix

3cfad782faf34c654ec837780ed7b3fe95e82c2eJohan B. C. Engelentypedef boost::intrusive::list_base_hook<> ChildrenListHook;

57678273bfa80d2feb4fa17ac25818f277f5c684cilix

e44b9de426cfa07c598fda61d214dc053a0706ddcilixclass DrawingItem

f2604687c203c022c4a9715f34e34253a7ff0e75Johan B. C. Engelen : public ChildrenListHook

e44b9de426cfa07c598fda61d214dc053a0706ddcilix{

044d712d4d03f8354962d54e47cfac2346a69ccccilixpublic:

6b03b973a8d36d45d5345ba1013db10df1c7a5cecilix enum RenderFlags {

6b03b973a8d36d45d5345ba1013db10df1c7a5cecilix RENDER_DEFAULT = 0,

044d712d4d03f8354962d54e47cfac2346a69ccccilix RENDER_CACHE_ONLY = 1,

044d712d4d03f8354962d54e47cfac2346a69ccccilix RENDER_BYPASS_CACHE = 2

044d712d4d03f8354962d54e47cfac2346a69ccccilix };

57678273bfa80d2feb4fa17ac25818f277f5c684cilix enum StateFlags {

57678273bfa80d2feb4fa17ac25818f277f5c684cilix STATE_NONE = 0,

57678273bfa80d2feb4fa17ac25818f277f5c684cilix STATE_BBOX = (1<<0), // geometric bounding box is up-to-date

57678273bfa80d2feb4fa17ac25818f277f5c684cilix STATE_DRAWBOX = (1<<1), // visual bounding box is up-to-date

d4200d96d8369f38efb722b04869b360388eeb80cilix STATE_CACHE = (1<<2), // cache extents and clean area are up-to-date

d4200d96d8369f38efb722b04869b360388eeb80cilix STATE_PICK = (1<<3), // can process pick requests

d4200d96d8369f38efb722b04869b360388eeb80cilix STATE_RENDER = (1<<4), // can be rendered

57678273bfa80d2feb4fa17ac25818f277f5c684cilix STATE_ALL = (1<<5)-1

044d712d4d03f8354962d54e47cfac2346a69ccccilix };

044d712d4d03f8354962d54e47cfac2346a69ccccilix typedef boost::intrusive::list<DrawingItem> ChildrenList;

044d712d4d03f8354962d54e47cfac2346a69ccccilix

044d712d4d03f8354962d54e47cfac2346a69ccccilix DrawingItem(Drawing *drawing);

044d712d4d03f8354962d54e47cfac2346a69ccccilix virtual ~DrawingItem();

044d712d4d03f8354962d54e47cfac2346a69ccccilix

044d712d4d03f8354962d54e47cfac2346a69ccccilix Geom::OptIntRect geometricBounds() const { return _bbox; }

044d712d4d03f8354962d54e47cfac2346a69ccccilix Geom::OptIntRect visualBounds() const { return _drawbox; }

044d712d4d03f8354962d54e47cfac2346a69ccccilix Geom::OptRect itemBounds() const { return _item_bbox; }

044d712d4d03f8354962d54e47cfac2346a69ccccilix Geom::Affine ctm() const { return _ctm; }

044d712d4d03f8354962d54e47cfac2346a69ccccilix Geom::Affine transform() const { return _transform ? *_transform : Geom::identity(); }

044d712d4d03f8354962d54e47cfac2346a69ccccilix Drawing *drawing() const { return _drawing; }

044d712d4d03f8354962d54e47cfac2346a69ccccilix DrawingItem *parent() const;

044d712d4d03f8354962d54e47cfac2346a69ccccilix

044d712d4d03f8354962d54e47cfac2346a69ccccilix void appendChild(DrawingItem *item);

044d712d4d03f8354962d54e47cfac2346a69ccccilix void prependChild(DrawingItem *item);

044d712d4d03f8354962d54e47cfac2346a69ccccilix void clearChildren();

044d712d4d03f8354962d54e47cfac2346a69ccccilix

044d712d4d03f8354962d54e47cfac2346a69ccccilix bool visible() const { return _visible; }

044d712d4d03f8354962d54e47cfac2346a69ccccilix void setVisible(bool v);

bool sensitive() const { return _sensitive; }

void setSensitive(bool v);

bool cached() const { return _cached; }

void setCached(bool c);

void setOpacity(float opacity);

void setTransform(Geom::Affine const &trans);

void setClip(DrawingItem *item);

void setMask(DrawingItem *item);

void setZOrder(unsigned z);

void setItemBounds(Geom::OptRect const &bounds);

void setKey(unsigned key) { _key = key; }

unsigned key() const { return _key; }

void setData(void *data) { _user_data = data; }

void *data() const { return _user_data; }

void update(Geom::IntRect const &area = Geom::IntRect::infinite(), UpdateContext const &ctx = UpdateContext(), unsigned flags = STATE_ALL, unsigned reset = 0);

void render(DrawingContext &ct, Geom::IntRect const &area, unsigned flags = 0);

void clip(DrawingContext &ct, Geom::IntRect const &area);

DrawingItem *pick(Geom::Point const &p, double delta, bool sticky);

protected:

void _renderOutline(DrawingContext &ct, Geom::IntRect const &area, unsigned flags);

void _markForUpdate(unsigned state, bool propagate);

void _markForRendering();

void _setStyleCommon(SPStyle *&_style, SPStyle *style);

virtual unsigned _updateItem(Geom::IntRect const &area, UpdateContext const &ctx,

unsigned flags, unsigned reset) { return 0; }

virtual void _renderItem(DrawingContext &ct, Geom::IntRect const &area, unsigned flags) {}

virtual void _clipItem(DrawingContext &ct, Geom::IntRect const &area) {}

virtual DrawingItem *_pickItem(Geom::Point const &p, double delta) { return NULL; }

virtual bool _canClip() { return false; }

Drawing *_drawing;

DrawingItem *_parent;

ChildrenList _children;

unsigned _key; ///< Some SPItems can have more than one NRArenaItem;

/// this value is a hack used to distinguish between them

float _opacity;

Geom::Affine *_transform; ///< Incremental transform from parent to this item's coords

Geom::Affine _ctm; ///< Total transform from item coords to display coords

Geom::OptIntRect _bbox; ///< Bounding box in display (pixel) coords

Geom::OptIntRect _drawbox; ///< Bounding box enlarged by filters, shrinked by clips and masks

Geom::OptRect _item_bbox; ///< Bounding box in item coordinates

DrawingItem *_clip;

DrawingItem *_mask;

Inkscape::Filters::Filter *_filter;

void *_user_data; ///< Used to associate DrawingItems with SPItems that created them

DrawingCache *_cache;

unsigned _state : 8;

unsigned _visible : 1;

unsigned _sensitive : 1; ///< Whether this item responds to events

unsigned _cached : 1; ///< Whether the rendering is stored for reuse

unsigned _propagate : 1; ///< Whether to call update for all children on next update

//unsigned _renders_opacity : 1; ///< Whether object needs temporary surface for opacity

unsigned _clip_child : 1; ///< If set, this is not a child of _parent, but a clipping path

unsigned _mask_child : 1; ///< If set, this is not a child of _parent, but a mask

unsigned _pick_children : 1; ///< For groups: if true, children are returned from pick(),

/// otherwise the group is returned

// temporary hacks until I rewrite NRArena to Inkscape::Drawing

friend class NRArena;

friend void ::nr_arena_set_cache_limit(NRArena *, Geom::OptIntRect const &);

};

struct DeleteDisposer {

void operator()(DrawingItem *item) { delete item; }

};

} // end namespace Inkscape

#endif // !SEEN_INKSCAPE_DISPLAY_DRAWING_ITEM_H